Isaac n



(N0 Model.) v

-I. N. HOADLBY- WELL PAGKER-l.

No. 480,926. Patented Aug. 16, 1892.

UNITED STATES PATENT Frison.

ISAAC N. HOADLEY, OF BRADFORD, PENNSYLVANIA, ASSIGNOR TO THE MONITOR PAOKER COMPANY, OF SAME PLACE.

WELL-PACKER.

SPECIFICATION forming part of Letters Patent No. 480,926, dated August 16, 1892.

Application filed November 2, 1891. Serial No. 410,577. (No model.)

To all whom it may concern.-

Be it known that I, ISAAC N. HOADLEY, a citizen of the United States, residing at Bradford, in the county of McKean and State of Pennsylvania, have invented certain new and useful Improvements in Well-Packers; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to packers for oil, gas,

and Artesian wells; and it consists in certain novel features hereinafter described and claimed.

Reference is had to the accompanying drawings, wherein the same parts are indicated by the same letters.

Figure l represents a section of an oil-well and a vertical projection of a well-packer in operation therein, part of the said packer being broken away. Fig. 2 represents a central vertical section of the packer when free from unusual or imposed tension or compression. Fig. 3 represents a vertical projection of a pumping-packer fitted according tomy invention. Fig. 4 represents an interior View of one of the rubber cups used in the device shown in Fig. 3, and Fig. 5 represents an interior view of one of the rubber cups used in the device shown in Figs. l and 2.

A represents the bore of the well; B and O, tubes therein; D, a cup-shaped washer made of rubber, leather, or other elastic material, but preferably of rubber.

E represents a flat washer of wood or metal.

F represents a base-ring, which may either abut against the shoulder c of the tube O or may be supported by the springs G, carryingl vdisk and an inverted cup until a sufficient number of each has been put on. This number will depend upon the sizeof the cups and the pressure upward in the well; but ordinarily about ive of the cups are used. Having slipped a sufiicient number of rubber cups and wood or metal disks over the tube-section C, the upper section B is screwed on, but is not screwed down hard enough to compress the rubber cups. IVhen the sections are thus screwed togetherI lightly, they are slid into the well, and when at the right depth the tube-section B is twisted around, screwing it down upon the section O and compressing the inverted rubber cups D between the disks E. The lips d of these cups D are forced out over the edge of the disks E, as shown in Fig. l, and ill up the bore of the well. The oil, water, or gas pressing under these lips d wedges them out against the bore of the well, and thus materially assists in making the joint tight.

When it is desired to remove the packer from the well, by unscrewing on the tubesection B the pressure is taken off from the rubber cups, which contract and allow the packer to be readily withdrawn.

The only essential difference between the packer shown in Figs. l and 2 and that shown in Fig. 3 is that in Fig. 3 the cups D' and disks E have two holes, as shown in Fig. 4, and slip over two tubes C and H, instead of having only one hole, as shown in Fig. 5.

It will be obvious, if the section B telescope over the section O instead of being screwed thereto, that the cups D may be expanded laterally by the weight of the superimposed co1-V umn of tubing or by pressure applied from above.

Owing to the wedge shape of the lips d of the cups D and the flat shape of the washers, the expansion of the said cups requires very little downward pressure, and the upward pressure of the fluid in the well also materially assists to keep the joint tight.

Having thus described my invention, what I claim, and desire to secure by Letters Patent of the United States, is-

l. In an oil-well, a gas-well, or an Artesian well, the combination, with the well-tubes, of a packer composed, essentially, of alternate invertedcup shaped washers of rubber or other elastic material and iat rings of wood roo or metal, the said rubber washers being pressed between the said rings and expanding beyond the edges thereof, substantially as and for the purposes described.

2. In a packer for oil, gas, and Artesian wells, the combination, with the tube-section C, havlng screw-thread c and shoulder c thereou, of the ring F, bearing against said shou1 der, the rubber cups D and disks E, slipped ro on said tube-section over said ring, and the edges tube-section B, adapted to screw down on said screw c and compress said rubber cups between said disks, substantially as described.

In testimony whereof I afix my signature in presence of two witnesses.

I. N. I-IOADLEY.

Witnesses:

E. M. ELWAIN, W. R. MCCONNELL. 

